July 2012
Intermediate to advanced
478 pages
10h 3m
English
Content preview from Microsoft SQL Server 2012 Performance Tuning CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Effect of statistics on a filtered index
The filtered column index is one of the enhancements for non-clustered indexes, provided in Microsoft SQL Server 2008, and it is available in SQL Server 2012. We can consider a simple, non-clustered index with the WHERE clause as a filtered index. A well-defined, filtered index reduces maintenance costs, reduces index storage, and improves query performance. Since this chapter is about statistics, we are not going to see how a filtered index works, in this recipe. Look at the Increasing performance by filtered index recipe in Chapter 9, Implementing Indexes, to learn more about filtered indexes.
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There is a table named WorkOrder in the Production schema in database AdventureWorks2012, and this ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.